TY  - BOOK
AU  - Leffingwell, Dean
AU  - Widrig, Don
TI  - Managing Software Requirements : :a use case approach 
SN  - 9788131711798
U1  - 005.1068 
PY  - 2007///
CY  - New Delhi
PB  - Pearson Education
KW  - Software Requirements
KW  - IT
KW  - Computer Application
N1  - Index Included
ER  -